Emil kaselowsky



(No Model.)

ENKASELOWSKY, K. GRAMM & G. KURBITZ.

VALVE GEAR FOR MULTIPLE CYLINDER ENGINES.

No. 408,915. Patented Aug. 13, 1889.

Jty- 2.

iiizesses Nv PETERS, PhnlwLilhngmphar, Washinglnn, D. c.

* UNITED STATES PATENT OFFICE.

EMIL KASELOWSKY, KARL GRAMM, AND GUSTAV KIIRBITZ, OF BERLIN, GERMANY,ASSIGNORS TO FRIEDRICH KARL GLASER, OF SAME PLACE.

VALVE-GEAR FOR MULTIPLE-CYLINDER ENGINES.

SPECIFICATION forming part of Letters Patent No. 408,915, dated August13, 1889. Application filed October 22, 1888. Serial No. 288,732. (Nomodel.)

12) aZZ whom it may concern:

Beit known that we, EMIL KASELOWSKY and KARL GRAMM, both subjects of theKing of Prussia, and GUSTAV KiiRBITZ, a subject of the Duke ofSachsen-Heiningen, residing at Berlin, in the Kingdom of Prussia,Germany, have invented new and useful Improvements in Valve-Gears forThree and Multiple Cylinder Engines, of Which the following is aspecification.

The herein-described valve arrangement for three-cylinder engines or formultiple-cylinder engines has for its object to effect the supply anddischarge of the steam or other working fluid by means of doublepistonvalves, which are quite free from pressure and are worked from asingle inclosed eccentric carrying several eccentric-rings independentfrom each other and made each in one piece, each ring serving to operateonly one piston-slide. This arrangement avoids the disadvantagesattending the various arrangements of valve-gear hitherto adopted-as,for instance, when oscillating slide -valves or cocks are employedsubject to'rapid to-andfro movements, which cause wear, looseness, andleakage, as well as irregularity in the distribution of theWorking-fluid. Especial advantage of the improved valve-gear lies in theperfect relief of the valves from pressure in any direction, and in thecircular fitting by which one-sided or inexact working of the parts isentirely avoided. Moreover, in the improved construction the exhaust isregulated by means of an auxiliary slide worked from the sameeccentric-rod as the main slide, instead of employing, as in engineshitherto known, some special valve-cock or other arrangement for thepurpose. Independently of the novel valve-gear there is provided, ac-.

cording to this invention, for rapidly-moving engines a separate exhaustby a special passage through each piston, whichis thus made to operateas an exhaust-valve opening at the end of the expansion period of thestroke.

The accompanying drawings show part of a three-cylinder engine arrangedaccording to this invention, Figures 1 and2 representing partialsections on planes at right angles to each other through the axes of theslidevalves.

Similar letters of reference indicate corresponding parts in both views.

a is the eccentric-sheave fixed on the crank shaft and surrounded by thethree separate rings 1), c, and d, to which are secured thecocentric-rods b c d. The ring I) occupies the whole breadth of thesheave, while the rings 0 and d, arranged one near the other, surroundthe ring Z).

At the side of each cylinder is fitted the outer piston-slide 17 havingWithin it the auxiliary slide b both worked from the eccentric-rod b,the outer 1) directly and the inner b by a rod b from abracket b projecting at the side of the rod 12. In like manner the slide-valves ofthe other cylinders are Worked, respectively, from the rods 0 cl.

The working-fluid is supplied by the pipe e to the annular space f,surrounding the smaller part of the slide. The exhaust passes throughthe ports g and the tubular interior of the auxiliary slide 19 To letescape the gases, besides the piston-slide b and the auxiliary slide 19the hereinafter-described construction may also be employed. In theworking-piston B are formed two opposite passages 76, which are arrangedin such a manner that at the forward stroke of the piston during thefilling and expansion period the exhaustrport remains closed; but towardthe end of the stroke open to the central cavity of the engine, so thatby these, as well as by the slidevalve, there is free passage forexhaust. During the return-stroke of the piston the passages are againclosed.

Having thus described our invention, what We claim, and desire to secureby Letters Patent, is

1. In a valve-gear for multiple-cylinder engines, the combination, withthe single eccentric a, the separate eccentric-rings b c d, mounted onthe eccentric and provided with the rods 1) c (1', having brackets If 061 the distributing-piston slide-valves b 0 d connected to the rods 1) cd, the auxiliary slides 12 0 d and the rods 12 c dflconnected to theauxiliary slides and to the brackets, substantially as described.

2. In a valve-gear for multiple-cylinder engines, the eccentric a,eccentric-rings b c d, provided with the rods 1) c d, having brackets bc (1 the piston slide-valves l) c (P, con- In testimony whereof we havesigned our IO neeted to the rods 1) c (1 the auxiliary slides names tothis specification in the presence of U c d, and the rods 1)" cdfleonnected to the two subscribing witnesses.

auxiliary slides and to the brackets, in com- EMIL KASELOXVSKY. 5bination with the working-piston B, provided KARL GRAMM.

with the exhaust-passage 76, substantially as lUSTAV KURBITZ.

described, whereby a second exhaust of the itnesscs:

Working-fluid will automatically take place LUDWIG GLASER,

at the end of the stroke, as set forth. EDUARD PEITZ.

